Nailing machine attachment



Filed March' 23. 1951 J. B. FRE-AR 2,654,886 NAILING uAcHINE: ATTAcl-MENT 4 Sheets-Sheet 1 v. @mf

Oct. 13, 1953 .1. e.. FREAR 2,654,885

. NAILING MACHINE: ATTACHMENT Filed Marck; 2:5, 1951 4 sheets-snaai 2 Oct. 13, 1953 J. B. FRE-AR 2,654,885

- MAILING MACHINE ATTACi-DAJIENT Filed latch 25, 1951 4 Sheets-Sheet .'5

0st. 13, 1953 .1.a FREAR 2,654,886

NAILING MACHINE ATTACHMENT Filed Haren 23, 1951 4 shams-sheet 4 N P k /fRM vzywufmf fab/64a Patented Oct. 13, 1953 ess-esse i NAMNGMAQHINE AT'rimIIMltivi'lif V the` slot and their top ledges flush with the .top `,of lthe workeble conventienal clinher. 4plates are inoperative nqsitnn their :top-audites meeulicentlyfbelow.therme of the Wrk table tenermi thetnailswtomsfthroueh the werk `Launchimotriildeinte-film?slet .betwemithe bilde. whn the madam/tite mile-are tight Yaga1i1-stt0n the-work ,un f sunk Wbe: .idwtheesuriaheemiesred Amthemrfenerfmementen-.the @wiet-while. theme11. drive `the nails' a-re properly clinched. Thereoftezftlie y @ri-Metre andthe4211116.13@:metes@esamet their i insipemtive petitmnt-isi Qnetrequirement tofprlmex milk-le Qf a Section ""thatffnu nailegwiil-ixixbmge Qn ormrotmde so near thelbdgesthattheyieannntabe'lprapenlymlinehed.

`bridges are toodfanaparvthecleat or slaftf'willbe bent @down iagainst fthe `cli'noher*plates @when :the

nail'sare diven';v Thefnagilswwouldfthenmot pro-1 It LHas "b'eexrthe' usual apracticeeran-mtrerater spleet to markings ,ontb

t@ r the me?? idew1e one?? th'atffth bifor, "permitted limit rying the parts to be nailed or assembled, such as cleats, slats, strips or the like, along the work table of the machine and beneath the automatically actuated stops, there being one such stop at each side to intercept the forms and retain them in aligned position during the nailing operation, but immediately thereafter allow the form to be moved to and retained in another nailing position. With the present attachment, maximum speed of operation and production is assured along with optimum uniformity, accuracy and efliciency in the nailing operation.

In the present invention the side rails of the standard or conventional nailing machines are replaced by a roller at each lateral edge of the form and disposed directly over the clincher plates and adjustable laterally so as to avoid having nails penetrating the work in positions where they cannot be properly clinched and to avoid having cleats or slats, which rest on bridges and are parallel to theslot, improperly supported by said bridges near the` points of nailing.

, Among the objects of the present invention is the provision ofv a novel attachment which may be readily mounted onto anailing machine and having spaced depending stops adapted to be engaged by spaced upstanding blocks or abutments ,on a nailing form movable relative to the stops,

containingr the pre-arranged cleats, slats, strips or other parts for ultimately forming the assembled section, all so constructed and arranged that these blocks orabutments upon being moved into engagement with the stops of the attachment accurately locate the position of the form and the crate or other `parte disposed therein, whereby these parts will be accurately aligned with the nail drivers of the chucks and positively nailed together in their proper relation with all nails correctly located.

It is another and important object of the present invention tol provide a novel means and mechanism mounted upon and operable in timed relation with the nailing drivers of a nailing machine and associated With the form in which the crate or other parts to be nailed are assembled for effecting accurate nailing and joining of these parts.

Another important feature of the present invention is the provision of `a novel stop attachment for a nailing machine having depending stops automatically moved into and out of operative position in which the stops intercept and instantly and positively position the form and its contained parts to be nailed or assembled in their correct relation for the nails to be driven. The operator spends no time in locating or arranging the form in its exact position for maximum eiiciency, but merely is required to quickly push or move the form forwardly; i. e. longitudinally along the work table and through the open back of the machine to its limit of movement as soon as the nail drivers and the chucks are lifted from the nail heads or work.

The invention further comprehends the provision of a novel means and mechanism for accurately locating and positioning the stops in position to intercept a form regardless of the speed of operation of the machine or the operator feeding the forms beneath the nail chucks.

Another important feature of the present invention is the manner of arranging and locating therstops so that even though the forms for the crate or other parts to be assembled may be somewhat out of square, or if some members in lone Vplane of the crate section arenon-parallel to other members in the same plane, the stops will intercept and hold them in such manner that the nails will be driven in their proper places. This is accomplished by disposing or spacing the contactV points on the forms at xed distances from the center lines of the rows of nails which are also at fixed distances, such as the work requires, from the center lines of the cleats, slats or strips in which they are driven.

A further object of the present invention is the provision of a novel attachment for a nailing machine having stops so constructed and arranged that they may be quickly and easily adjusted to accommodate forms of varying widths and their line of travel so that no nails will impinge on the bridges of the table or protrude so close to them that they will not be properly clinched and so that any cleats or slats which rest on the bridges and are parallel to the table slot will be properly supported byy said bridges near the points of nailing.

Further objects are to provide a construction of maximum simplicity, eiciency, economy and ease of assembly and operation, and such further objects, advantages and capabilities as will later more fully appear and are inherently possessed thereby. Y

The invention further resides in the construction, combination and arrangement of parts illustrated in the accompanying drawings, and while there is shown therein4 a preferred embodiment, it is to be understood that thesame is susceptible of modication and change, and comprehends other details, arrangements of parts, features and constructions Without departing from the spirit of the invention.

In the drawings:

Figure 1 is a view in rear elevationuof the novel attachment for a nailing machine and looking in the direction of the arrows l-l of Fig. 2.

Fig. 2 is a View, part in side elevation and part in vertical cross section, of the novel attachment. the view being taken on the line 2 2 of Fig. 1 and in the direction of the arrows.

Fig. 3 is a fragmentary view in front elevation of the novel attachment assembled upon a nailing machine with the view merely showing approximately one-half of the machine and attachment, it being understood that the otherhalf of the machine and attachment is similar to or a duplicate of that shown.

Fig. 4 is a fragmentary view in rear elevation of the portion of the machine and attachment of Fig. 3.

Fig. 5 is an enlarged fragmentary view in rear elevation of one of the stops of the attachment.

Fig. 6 is an enlarged view, part in side elevavation Vand part, in vertical cross section through the stop assembly and showing the stop in engagement with an abutment on the form containing the parts to be nailed.

Fig. 7 is a view in side elevation of the stop assembly with the stop elevated from an abutment or block on the form, the view being taken from the reverse side of Fig. 6 and having portions of the assembly broken away for a. clearer disclosure of the operating parts.

Fig. 8 is a fragmentary View in side elevation similar to Fig. 2, but showing the stop in its elevated position as in Fig. 7.

Fig. 9 is a view in perspective of a nailed section in a nailing form, the assembled section being that of crate or one of numerous types adapted to be assembled by the present invention.

er bracketV 56 and a support 66 may be combined into one bracket or fixture, if desired. Mounted on each of the opposite ends of the transverse shaft 51 carrying the hand lever 51@L is a laterally projecting arm or finger 61 which extends over the upper end of a push rod 22.

When the cross head I is at the top of its stroke, the stops I6 are in their lower position as shown in Figs. '1, 2, 5 and 6, with the contact dog 39 of each providing an abutment against which the opposite, aligned nailing blocks 49 on the nailing form I3 engage as this form is moved in the direction of the arrows (a) in Figs. 2, 6 and "I and toward the stops. .At such time the component parts of the attachment are in the position shown in Figs. 1, 2, 5 and 6. In fact, these parts except for the brackets 58, immediately assumed the position therein shown at the time the cross head I0 had moved up from the bottom of the previous stroke far enough for the brackets 58 thereon to break contact with the upper end of the spr-ings 6I, for as these brackets 59 moved upwardly the coil springs 64 simultaneously lifted all connected parts until the cam bar I1 reached the upper end of the slots in the brackets or cam bar guides 23. The lifting of the cams 46 allows the contact dogs 39 to drop to stop position (Figs. 2 and 6) whereby the opposite, aligned blocks or abutments 49 on the nailing form I3 engage these dogs when the forms are pushed forward to the accurately located position for nailing.

When the cross head I9 vdescends in its nailing stroke, the projection 59 on each bracket 58 contacts its spring 5I to depress its push rod 22 and by means of the connected parts the transverse cam bar I1 is depressed or moved ver-V tically to the bottom of the slots 20 in the brackets of cam bar guides 23. Such movement causes each cam 46 to be simultaneously forced downwardly whereby it moves its cam roller 32 rearwardly or away from cam roller 3| in Figs. 6 and '1 and causes its stop levers 34 to be tilted. Each contact dog 39 is thereby lifted suiciently to allow the compression spring 44 to force or propel the lower end of this dog forwardly over the nailing blocks 49.

As the cross head rises, the cam bar I1 is elevated to withdraw the cam 46 lfrom between each set of cam rollers 3| and 32, thereby permitting the stop levers 34 to drop until the oontact dogs 39 thereupon rest on top of the stop blocks or abutments 49, against which they previously abutted and the nailing form I3 is then free to be moved or pushed forwardly by the operator with the abutments 49 sliding under the downward projections 38 of the stop levers 34 and the contact dogs 39 after which the projections 38 and the dogs 39 drop down onto the nailing form I3 so that the stop levers 34 are in the full line position of Fig. 6 and contact dogs 39 will intercept the succeeding set of stop blocks or abutments 49.

By contouring the stops in the manner shown in Figs. 6 and '1, if the operato-r wishes to pull or remove a nailing form I3 to inspect the nailing accomplished on the contained nailed section, or for any other reason, this can be readily accomplished by reason of the tapered or beveled surface 68 at the rear of the downward projection 39 of the stop levers 34, whereby retraction or withdrawal of a nailing form I3 will cause the stop blocks 49 thereon toy abut or contact in succession this tapered or beveled surface of the stop levers, and vby reasonv of such contour raise the stops to allow for the partial or complete removal of the nailing form.

If the operator desires to push a nailing form I3 forwardly to any desired position without operating the machine, this may be readily accomplished by pushing upwardly on the handle 69 of the hand lever 51a and rotating the transverse rock shaft 51 whereby the fingers 51 on theV ends of this transverse shaft engage the upper ends of and push downwardly on the push rods 22. Depressing the push rods 22 in this manner lowers the transverse cam bar I1. which actuates and causes the cams 46 to tilt the stop levers 34 to the position of Fig. '7 and to lift or carry therewith the contact dogs 39 to a position above the nailing blocks 49 where they may be held by holding the hand lever in upward position until the form is pushed to the desired location.

From the above description and the disclosure in the drawings, it will be clearly apparent that the present invention comprehends a novel nailing machine attachment that is readily and easily installed on a nailing machine, and which operates automatically in synchronism with the functioning of the crosshead, nail drivers and chucks of the machine for accurately locating the form with crate parts or the like therein for the nailing operation.

It is to be understood that the nailing operation is initiated by any suitable tripping mechanism under the control of the operator, or by an electrically controlled trip mechanism which is energized for the correct period of time as the stop blocks 49 come into contact with the dogs 39, and that upon the automatic releasing of the form by the stop mechanism after a nailing stroke or operation, the form and its contained parts for fabricating a crate section or the like are moved forwardly until they are again intercepted by the stop mechanism at a succeeding nailing operation position or station. To align the form laterally on the work bed or support, the latter may be provided with an adjustable guide bar or other guiding means such as adjustable rollers B (Figs. 3 and 4). The stops and their cams being adjustable simultaneously on the back gauge and cam bar, they may be quickly adjusted to accommodate forms of any desired size within the limits of the nailing machine.

Although the present nailing attachment is referred to in connection with the assembly of sections such as form the top, bottom, sides, ends or other parts of a crate assembly, box, container or the like, it is to be understood that the invention is not limited thereto but is useful in nail.- ing other frames or sections including frames used for the protection of articles in car loading and especially at the door of freight cars, as Well as at the ends of groups of containers in the car for protection against damage by steel straps or other means for holding these containers vin place. The attachment is also adapted for use in nailing together the skids and the Wood boards in a platen and for other frames or forms and purposes which will be readily apparent to those skilled in the art.

The disposition, spacing and number of sets of the blocks or abutments 49 depend upon and may be varied in accordance With the location and spacing of the rows of nails to be driven. The arrangement shown in Fig. 9 is but illustrative and shows three sets of spaced stops or abutments acceder t` ,and-three ,rows nof ,nails driven in staggered `mfrensentent.but.nail drivers disposed ineimlerly daal. @691299,- site sides .of the torna .ette .ment .mounted n ,nailinemachine and y cross head of the n 1 n ing mach miribenhiuntdfonfthe machine and spaced stops adjustably mounted non said member and debending over' the "werk table 'fer engagmgftne abutments on the nf crm therebygintercepting and retaining the form in `urately located pog each Qfthesuie cessive nailing4 oprations' or "strokes of 'the 'inachine.

2,. In combination with a nailing machine, means for accurately aligning and locating upon the work table of the machine and beneath its nailing chucks a slidable nailing form containing the cleats and slats to be nailed and joined into a section forming a panel or other part of a crate, including spaced projections provided on the opposite sides of the form, a supporting bar mounted on the machine above the work table, and spaced vdepending stops adjustably mounted on the machine and each stop adapted to engage and intercept a projection on the form as the latter is moved over the table for accurately locating the form beneath the chucks for the one or more strokes of the machine or nailing operations.

3. In combination with a nailing machine having nailing chucks and a work table spaced therefrom and adapted to receive therebetween cleats and slats for the assembly of a wooden section, a form for receiving and retaining these cleats and slats in proper position for assembly, and interengaging means on the form and machine for intercepting the form as it is moved over the work table and beneath the nailing chucks for accurately locating and retaining the cleats and slats to be nailed beneath the chucks, said means including upstanding projections on the opposite sides of the form, a supporting bar mounted on the machine and disposed transversely of and above the work table, and spaced stops adjustably mounted on said bar and depending therefrom for engaging a projection at the opposite sides of the form to intercept and align this form and its cleats and slats for nailing.

4. In combination with a nailing machine having a work table adapted to receive a nailing form and contained parts to be nailed to form a Wooden section of a crate, container or the like with the forms and contained parts slid along the table to successive nailing stations, nailing chucks and a reciprocating cross head located above the Work table, spaced projections on the form, a supporting bar mounted above the work table and depending stop members carried by the supporting bar and actuated by movement of the cross head and engaged by aligned projections on the form to locate and retain the form and its contained parts in nailing position for each stroke @continente irig a Support 'for'Tecei 'I'n'echa smfr joiriirigthe" andiecli for accurately locating said parts in predetermined positions beneath the cross head for successive nailing strokes of the machine, said mechanism including spaced abutments at the opposite sides of the panel or other section and moving along the support with the parts forming the panel or other section, a supporting member mounted on the machine and disposed above and extending across the Work table, and stop members carried by the supporting member in spaced relation across the machine and adapted to be moved into the path of said abutments for locating and retaining the parts in predetermined and properly aligned positions during nailing.

7 In combination with a nailing machine having a work table adapted to receive a nailing form and parts to be nailed to fabricate a section of a crate, container or the like, nailing chucks and a reciprocating cross head located above the work table, abutments upon the laterally spaced and longitudinally extending sides of the form and spaced apart in conformity with the predetermined spacing of the rows of nails driven during the successive nailing strokes of the machine, a supporting member mounted on the machine and extending across the work table, and pivotally mounted stop members carried by said supporting member in spaced relation and each adapted to engage an abutment at the laterally spaced sides of the form to thereby intercept the form as it is moved along the Work table and retain it and the contained parts during each successive nailing stroke of the machine, and depending cam-actuated means for elevating each stop member to release the form upon completion of each nailing stroke for movement to a succeeding nailing position.

8. In combination with a nailing machine having a work support and a form for receiving parts to be nailed to fabricate a panel of a crate, container or the like, nail drivers for joining the parts, and mechanism for accurately locating said parts in predetermined positions beneath the nail drivers for successive nailing strokes of the machine, said mechanism including spaced abutments at the opposite sides of the form and moving along the support with the parts forming the panel, a member mounted on the machine and extending transverse of the support and camactuated stop members adjustably mounted on said member in spaced relation and adapted to intercept the form as it is moved along the support and retain the form and the contained parts during successive nailing strokes of the machine.

9. In combination with a nailing machine having a work table adapted to receive a nailing form and contained parts to be nailed to form a wooden section of a crate, container or the like with the forms and contained parts slid along the table to successive nailing stations, nailing chucks and a reciprocating cross head located above the Work table, laterally spaced roller guides at the opposite sides of the Work table, spaced projections on the form, a supporting bar mounted above the Work table and depending stop members carried by the supporting bar and actuated by movement of the cross head and engaged by aligned projections on the form to locate and retain the form and its contained parts in nailing position for each strokerof the cross head.

10. In combination with a nailing machine having nailing chucks and a work table spaced l2 therefrom and adapted .to receive therebetween cleats and slats for the assembly of a. nailed section, a form for receiving and retaining these cleats and slats in proper position for assembly,

roller guides at the opposite sides of and longitudinally of the path of travel of the form, interengaging means on the opposite sides of the form and on the machine for intercepting and retaining aligned the form as it is moved over the Work table and beneath the nailing chucks for accurately locating and retaining the crate parts beneath the chucks, and cam-actuated means for releasing said interengaging Vmeans to permit movement of the form and its contained parts to a succeeding nailing station.

JENNESS B. FREAR.

Name Y Date Thedford Apr. 16, 1940 Number 2,197,371 

